The GENTEC Heliox Flowmeter Regulator is calibrated for 80/20 heliox . Heliox Flowmeter Regulators are leading for use in respiratory urgent care and respiratory treatment purposes. Maximum inlet pressure 3000 psi. Chrome plated brass body. Polycarbonate tubes for longer service life. Flowmeter calibrated for heliox 80/20 mixture. Use our heliox flowmeter regulator to avoid the conversion errors that occur when using standard oxygen or breath flowmeters. It has two pressure gauge for easy reading.